Collapsible tube closure



July 14, 1936. J. LICKWAR COLLAPSIBLE TUBE CLOSURE Filed Feb. 13, 1936 lInvent-or Jerry a'az/faz" x I I ama! A Homey man,

Patented July 14, :1936

UNITED STATES PATENT oFElcE The present invention relates to new anduseful improvements in collapsible tube closures andhas for its primaryobject to provide, in a manner as hereinafter set forth, a device ofthischaracter which will open under pressure vwhen the.

tube is squeezed and which will automatically close when the squeezingceases.

Other objects of the invention are to provide a closure of theaforementioned character wlich will be comparatively `simple inconstruction, strong', durable, highly emcient and reliable in use,compact, attractive in` appearance and which may be manufactured at lowcost.

All' of the foregoing and still further-'objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawing whereinlike characters of reference designate corresponding parts throughoutthe sev-4 eral views, and whereinzy Figure 1 is a view in side elevationof the invention. o

Figure '2 is a view in iront elevation of the device. V I Figure 3 is aview in horizontalsection, taken substantially on ther line 3-3 ofFigure 1.

Referring now to the drawing in detail, it will be seen that thereference numeral I designates 1 a collapsible tube which is providedwith ashoulder 2. Projecting from' the shoulder 2 is a neck 3 whichisopen at its free end. 4 Slidably mounted in the neck 3 is a closure 4having a discharge port 5 therein. The closure 4` is in the form of acylinder which vis closed '35 at its outer end, as at 9, the end wall 9project- Ing beyond said 'cylinder in a manner to form allange which isadapted to-seat on-the free end of the neck 3.

The reference numeral i designates a resilient rubber strip which ismounted longitudinally on the/ neck '3, and which has its end portionssec ed on diametrically opposite sides of said neck b ./a band 'I. Therubber strip 6 extends across the 'end wall 9 of the closure 4 between apair of spaced lugs 8 on said end wall.

It will thus be seen that the rubber strip 6 yieldingly secures theclosure 4 in retracted position, in which position the port I is closedby the neck and the flange provided by the projecting marginal portionof the end wall 9 is 5 engaged on the free end of said neck l. When, thetube I is squeered in the usual manner the pressure of the contents ofsaid tube forces the closure 4 outwardly against the tension of theresilient rubber strip 6 until the port 6 clears 10 theouter end of theneck 3, thus permitting the discharge of the desired quantity ofmaterial from the tube. When 'squeezing of the tube I ceases th'e rubberstrip 6 immediately returns the closure 4 to closed position. 15

It is believed that the many advantages of a collapsible tube closureconstructed in accordance with the present invention will be readilyunderstood, and although a preferred embodiment of the device is asillustrated and described,` 20 it is to be understood that changes inthe details of construction :and in the combination and arrangement ofparts may be resorted to which will fall within the scope oftheinvention as claimed.

What is claimed iszi In a collapsible tube including a neck open i atitsfree end, a closure comprising a substantially cylindrical portionslidable in the neck, said cylindrical portion having a discharge portthere- 30 in adapted to be closed by the neck when the closure is inretracted position, said closure comprising an end wallprojecting-beyond the cylindrical portion for providing a flangeengageable on the free end of the neck, spacedvlugs on said 35 end wall,a resilient rubber strip mounted longitudinally on the neck landextending across the end wall between the lugs, and a band securing the,end portions of the rubber strip to the neck on diametrically oppositesides of said neck, said rubber strip constituting means for yieldinglysecuring theA closurel in retracted position.

f JERRY LICKWAR. 45

